New->Plugin Filter การสร้าง ปลั๊กอิน ฟิลเตอร์ ในโปรแกรม ImageJ

Plugin Filter

เปิดหน้าต่างแก้ไขประกอบด้วย prototype plugin ประกอบด้วย PlugInFilter interface เพื่อประมวลผลในภาพปัจจุบันสองครั้ง ตัวอย่างอื่น ๆ ดูได้จาก https://imagej.nih.gov/ij/plugins/inverter.html

ตัวอย่าง Image Inverter

Author:
Wayne Rasband (wsr at nih.gov)
History:
2000/11/03: First version
2006/07/01: Simplified; uses get() and set() methods
Requires:
ImageJ 1.37j or later
Source:
Image_Inverter.java
Installation:
Copy Image_Inverter.class to the plugins folder and restart ImageJ.
Description:
This example plugin filter inverts the current image. Here is what the code looks like:

  public class Image_Inverter implements PlugInFilter {
    public int setup(String arg, ImagePlus imp) {
        return DOES_ALL+DOES_STACKS+SUPPORTS_MASKING;
    }
    public void run(ImageProcessor ip) {
      Rectangle r = ip.getRoi();
      for (int y=r.y; y<(r.y+r.height); y++)
        for (int x=r.x; x<(r.x+r.width); x++)
          ip.set(x, y, ~ip.get(x,y));
    }
  }

A few things to note:
1 Filter plugins must implement the PlugInFilter interface.
2 The setup() method is called one time when the plugin starts but run() is called repeatedly, once for each image in the stack.
3 User plugins do not use the package statement;
4 Plugins residing in the "plugins" folder, and with at least one underscore in their name, are automatically installed in the PlugIns menu.
5 Plugins can be installed in other menus by packaging them as JAR files.
6 The class name ("Image_Inverter") and file name ("Image_Inverter.java") must be the same.
7 This filter works with selections, including non-rectangular selections.
8 It will be called repeatedly to process all the slices in a stack.
9 It supports Undo for single images.
10 This plugin does not work with 32-bit (float) images with non-integer pixel values. Use getf() and setf() to work with such images.
11 "~" is the bitwise complement operator.
See Also:
Inverter_.java - the original version, which was faster, but a lot more complicated